You're talking about a way to find leaks? I prefer a quiet area with 15psi of air pressure instead. The smoke test may not reveal areas that leak only under boost.

Go to princess auto and find the parts to make a cap of your intake pipe and drill and tap a port for an air inlet. Then get a compressor and push air into the intake pipe, and listen for leaks.

agentM

06-18-2010, 12:04 AM

You're talking about a way to find leaks? I prefer a quiet area with 15psi of air pressure instead. The smoke test may not reveal areas that leak only under boost.

Go to princess auto and find the parts to make a cap of your intake pipe and drill and tap a port for an air inlet. Then get a compressor and push air into the intake pipe, and listen for leaks.When you say make a cap for the intake pipe, do you mean take all six pipe off and cover it with a cap? When its under pressure wouldn't the air come out of the BOV? Still not sure. thanks for the help.

everlast

06-18-2010, 01:49 AM

Six pipe? What do you mean?

I meant take off your air filter, and make a cap that will cap the intake pipe where the air filter bolted on, if possible. I'd have to know the layout of your intake piping, I guess. More details?

The BOV should be shut with no vacuum to pull it open, if its open at 100kpa (0 psi of boost) then you're venting boost, ie, boost leak. You'd need to adjust the BOV to be closed at 0 PSI.

agentM

06-18-2010, 08:01 AM

IC, thanks, I'll try it in the weekend. That's a big cap I have to buy since the air filter is about 5" wide.*th-up*

everlast

06-18-2010, 12:23 PM

is it round or square? if its round, the filter might be 5" but the pipe will not be that big.

You can get the stuff needed to make the adapter in the pic at Canadian Tire, Princess Auto, etc.

agentM

06-19-2010, 07:18 PM

If I do this myself I will have to take a view things apart. I have to take my fan, then the blower. Then the hose to the intake manifold. Take the under cover , jack up the car, dam, I might want to give it to the shop to test it for 1 hr service. The have the smoke to test and it will be easier for them. Thanks for the info, I have to see if I have time for this. It took me 18 hrs to put this S/c in.

What is that cover made of in that picture? What section in Canadian tire can I find that rubber cover?

uzi577

06-22-2010, 01:27 PM

If I do this myself I will have to take a view things apart. I have to take my fan, then the blower. Then the hose to the intake manifold. Take the under cover , jack up the car, dam, I might want to give it to the shop to test it for 1 hr service. The have the smoke to test and it will be easier for them. Thanks for the info, I have to see if I have time for this. It took me 18 hrs to put this S/c in.

What is that cover made of in that picture? What section in Canadian tire can I find that rubber cover?

hi agentM
I too suffer form chronic vacuum leaks.I am wondering if you made any head way with this contraption.:confused:

agentM

06-22-2010, 06:15 PM

hi agentM
I too suffer form chronic vacuum leaks.I am wondering if you made any head way with this contraption.:confused:I'm so busy at work I didn't get a chance yet. I probably do it if I had time. I might just go to a shop and get a smoke test. I think it's pretty easy to find out my leak but I have to find time. I'm only loosing 1 psi so I'm not leaking that bad. I think.

everlast

06-22-2010, 06:25 PM

boost leaks are not as bad on a supercharger setup. a turbo boost leak can mean the end of the turbo due to overspeed.

uzi577

09-02-2010, 03:58 PM

I'm so busy at work I didn't get a chance yet. I probably do it if I had time. I might just go to a shop and get a smoke test. I think it's pretty easy to find out my leak but I have to find time. I'm only loosing 1 psi so I'm not leaking that bad. I think.

HI Agent
Any updates, Did you get around to it?

agentM

09-03-2010, 12:16 AM

Well, I went under the car and check all the pipe connection and tighten it more and now its working fine. I'm getting 8 boost and when the weather is cool I get 9 sometimes.

iverson03tj

12-03-2010, 12:47 AM

Im new to these things, wo how do you know if there is a leak at all? like without checking for anything.

agentM

12-03-2010, 08:19 AM

You won't get a maximum boost when it leaking.

uzi577

01-27-2011, 07:15 PM

Im new to these things, wo how do you know if there is a leak at all? like without checking for anything.

It will be running below the spec, you should get either abnormal behavior, it will also trip CEL. Do remember the vacuum is very important to run engine. For OBD2 car it does anyway!

kevin325

08-01-2012, 02:27 PM

I have a vacuum leak on a S/C car - where would i block off in order to smoke test the system to find the leak?

uzi577

10-09-2012, 05:39 PM

Mine was intercooler hairline crack. So what the shop did first troubleshooted from to intake to intercooler, then intercooler itself, then pluming from intercooler to manifold. I think it was the easiest way to do it.

BMWdouche

10-21-2012, 03:10 AM

Get in touch with my boy Jon at Bimmersport and he'll do your smoke test for ya.. under $100

Dinanstu

10-21-2012, 08:10 AM

Get in touch with my boy Jon at Bimmersport and he'll do your smoke test for ya.. under $100

Exactly...get it done right, thats the place to go..I just did the same thing last week....*th-up*